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mica    音标拼音: [m'ɑɪkə]
n. 云母

云母

mica
云母

mica
n 1: any of various minerals consisting of hydrous silicates of
aluminum or potassium etc. that crystallize in forms that
allow perfect cleavage into very thin leaves; used as
dielectrics because of their resistance to electricity
[synonym: {mica}, {isinglass}]

Mica \Mi"ca\, n. [L. mica crumb, grain, particle; cf. F. mica.]
(Min.)
The name of a group of minerals characterized by highly
perfect cleavage, so that they readily separate into very
thin leaves, more or less elastic. They differ widely in
composition, and vary in color from pale brown or yellow to
green or black. The transparent forms are used in lanterns,
the doors of stoves, etc., being popularly called
{isinglass}. Formerly called also {cat-silver}, and
{glimmer}.
[1913 Webster]

Note: The important species of the mica group are:
{muscovite}, common or potash mica, pale brown or
green, often silvery, including {damourite} (also
called {hydromica} and {muscovy glass}); {biotite},
iron-magnesia mica, dark brown, green, or black;
{lepidomelane}, iron, mica, black; {phlogopite},
magnesia mica, colorless, yellow, brown; {lepidolite},
lithia mica, rose-red, lilac.
[1913 Webster] Mica (usually muscovite, also biotite)
is an essential constituent of granite, gneiss, and
mica slate; {biotite} is common in many eruptive rocks;
{phlogopite} in crystalline limestone and serpentine.
[1913 Webster]

{Mica diorite} (Min.), an eruptive rock allied to diorite but
containing mica (biotite) instead of hornblende.

{Mica powder}, a kind of dynamite containing fine scales of
mica.

{Mica schist}, {Mica slate} (Geol.), a schistose rock,
consisting of mica and quartz with, usually, some
feldspar.
[1913 Webster]


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  • Mica - Wikipedia
    Micas ( ˈmaɪkəz MY-kəz) are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into fragile elastic plates This characteristic is described as perfect basal cleavage
  • MICA: Water Mitigation Management Software | CoreLogic Next Gear
    MICA is a water damage restoration software that streamlines, standardizes, and simplifies the water mitigation loss documentation process to increase accuracy, compliance, and efficiency
  • Mica: Mineral information, data and localities. - mindat. org
    This page provides information about the commodity Mica in mineral resources and mining
  • Mica | Structure, Properties, Occurrence, Facts | Britannica
    Mica, any of a group of hydrous potassium, aluminum silicate minerals It is a type of phyllosilicate, exhibiting a two-dimensional sheet or layer structure Among the principal rock-forming minerals, micas are found in all three major rock varieties—igneous, sedimentary, and metamorphic
  • What is Mica? How is Mica Formed? What is it is Used For and Various . . .
    Mica, which is essentially a compound of silicate minerals, is comprised of closely related materials that have perfect basal cleavage They belong to the category of principal rock-forming minerals and are found in various categories like sedimentary, igneous, and metamorphic
  • The Mica minerals: geology, characteristics, types, and uses
    Mica refers to a group of silicate minerals renowned for their remarkable ability to be split into thin, elastic sheets This attribute, known as perfect basal cleavage, sets mica apart in the
  • What is Mica: Definition and Uses - HighMica
    Mica is a naturally occurring silicate mineral known for its sheet-like, layered structure In other words, mica mineral refers to a group of 37 related sheet silicate minerals that easily split into thin, flexible plates (a property called perfect basal cleavage)
  • Mineral Resource of the Month: Mica - EARTH Magazine
    The mica mineral group includes 34 phyllosilicate minerals, all with a layered, platy texture The mineral has been known for millennia: Mica was first mined in India about 4,000 years ago, where it was used primarily in medicines The Mayans used it for decorative effect in stucco to make their temples sparkle in the sun
  • Types of Mica: A Comprehensive Overview - fossibelle. com
    Mica is a group of silicate minerals characterized by their thin, platy structure and perfect cleavage properties Composed mainly of silica, aluminum, and potassium, the most recognized members of the mica group include muscovite, biotite, phlogopite, and lepidolite
  • Learn About the Minerals Known As Mica - ThoughtCo
    The mica minerals are distinguished by their perfect basal cleavage, which means that they are easily split into thin, often transparent, sheets Two micas, biotite, and muscovite, are so common that they are considered rock-forming minerals





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